CVE-2021-31933

Chamilo LMS 1.11.14 - Remote Code Execution (Authenticated)

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A remote code execution vulnerability exists in Chamilo through 1.11.14 due to improper input sanitization of a parameter used for file uploads, and improper file-extension filtering for certain filenames (e.g., .phar or .pht). A remote authenticated administrator is able to upload a file containing arbitrary PHP code into specific directories via main/inc/lib/fileUpload.lib.php directory traversal to achieve PHP code execution.

Se presenta una vulnerabilidad de ejecución de código remota en Chamilo versiones hasta 1.11.14, debido a un saneamiento de la entrada inapropiado de un parámetro utilizado para la carga de archivos y al filtrado inapropiado de extensiones de archivo para determinados nombres de archivo (por ejemplo, .phar o .pht). Un administrador autenticado remoto puede cargar un archivo que contiene código PHP arbitrario en directorios específicos por medio del salto del directorio en el archivo main/inc/lib/fileUpload.lib.php para alcanzar una ejecución de código PHP.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-30 CVE Reserved
2021-04-30 CVE Published
2021-05-14 First Exploit
2024-08-03 CVE Updated
2025-01-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-706: Use of Incorrectly-Resolved Name or Reference

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/49867	2021-05-14
http://packetstormsecurity.com/files/162572/Chamilo-LMS-1.11.14-Remote-Code-Execution.html	2024-08-03

URL	Date	SRC
https://github.com/chamilo/chamilo-lms/commit/229302139e8d23bf6862183cf219b967f6e2fbc1	2022-06-28
https://github.com/chamilo/chamilo-lms/commit/f65d065061a77bb2e84f73217079ce3998cf3453	2022-06-28
https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-48-2021-04-17-Critical-impact-high-risk-Remote-Code-Execution	2022-06-28

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Chamilo Search vendor "Chamilo"		Chamilo Search vendor "Chamilo" for product "Chamilo"				<= 1.11.14 Search vendor "Chamilo" for product "Chamilo" and version " <= 1.11.14"		-		Affected